Stimulator



FIG. 1 is a front perspective view of the stimulator;

FIG. 2 is a bottom view of the stimulator;

FIG. 3 is a top view of the stimulator;

FIG. 4 is a front view of the stimulator;

FIG. 5 is a back view of the stimulator; and,

FIG. 6 is a side view of the stimulator.

The broken lines shown in the drawings are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for the stimulator, as shown and described. 